CVE Explorer
CVE-2026-64193
Net::DNS versions through 1.55 for Perl allow remote execution injection via EDNS EXTENDED ERROR.
Net::DNS::RR::OPT::EXTENDED_ERROR::_decompose parses the EXTRA-TEXT field of an EDNS EXTENDED-ERROR option (RFC 8914) by tokenising the raw bytes and passing the result to Perl's eval. There is some escaping done for $ and @, but not for backticks. This can be exploited for command execution if $pkt->edns->option('EXTENDED-ERROR') is called in array context, for example with a payload of {0:`"<comm
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","packageName":"Net-DNS","product":"Net::DNS","programFiles":["lib/Net/DNS/RR/OPT.pm"],"programRoutines":[{"name":"Net::DNS::RR::OPT::EXTENDED_ERROR::_decompose"}],"repo":"https://www.net-dns.org/svn/net-dns/","vendor":"NLNETLABS","versions":[{"lessThanOrEqual":"1.55","status":"affected","version":"0","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:759deb931ddbf27be55cf15dc816cca81ddc5adf0f36206f1436e7e1097bf9b3 · sha256:4ee05cc768683174… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:759deb931ddbf27be55cf15dc816cca81ddc5adf0f36206f1436e7e1097bf9b3 · sha256:4ee05cc768683174… · /containers/adp/1/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-95","description":"CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:759deb931ddbf27be55cf15dc816cca81ddc5adf0f36206f1436e7e1097bf9b3 · sha256:4ee05cc768683174… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"url":"http://www.openwall.com/lists/oss-security/2026/07/20/12"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:759deb931ddbf27be55cf15dc816cca81ddc5adf0f36206f1436e7e1097bf9b3 · sha256:4ee05cc768683174… · /containers/adp/0/references/0
{"tags":["release-notes"],"url":"https://metacpan.org/release/NLNETLABS/Net-DNS-1.55_01/changes"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:759deb931ddbf27be55cf15dc816cca81ddc5adf0f36206f1436e7e1097bf9b3 · sha256:4ee05cc768683174… · /containers/cna/references/2
{"tags":["issue-tracking"],"url":"https://rt.cpan.org/Ticket/Display.html?id=179945"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:759deb931ddbf27be55cf15dc816cca81ddc5adf0f36206f1436e7e1097bf9b3 · sha256:4ee05cc768683174… · /containers/cna/references/1
{"url":"https://www.net-dns.org/blog/#release-candidate-for-netdns-1.56"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:759deb931ddbf27be55cf15dc816cca81ddc5adf0f36206f1436e7e1097bf9b3 · sha256:4ee05cc768683174… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.